Improvement in neck-yokes and pole-couplings



W. W. SKINNER.

Improvement in Neck-Yokes and Pole-Couplings.

No. 131,033, Patented sep.3,1a72.

- ating the several parts.

UNITED STATES PATENT OEEIcE.

WILLIAM W. SKINNER, OF DES MOINES, IOWA.

IMPROVEMENT IN NECK-VOICES AND POLE-COUPLINGS.

Specification forming part of Letters Patent No. 131,033, datedSeptember 3, 1872.

- SPECIFICATION. Specification describing a certain Improved A Neck-Yokeand Pole-Coupling, invented by catch, a flange, and an ear, andcombining and using the same with a neck-yoke and pole, in the mannerhereinafter fully set' forth. Figure 1 of my drawing is a miniatureperspective view illustrating the form of my coupling-pin. It is made ofcast metal, complete in one piece, and may vary in size. a is the pin oftapering form. b is a catch on the upper side and near the rear end, andmay vary in shape. c is an annular flange on the rear end. d is an earstanding upward and forward from the an ge c and rearA end of the pin b.f

Fig. 2 is a metal band or socket designed to encase the front end of thepole. cast complete in one piece and vary in form. e is a round openingin the center of the face with a slot or enlargement on the under side,designed to admit the passage of the catch b on the pin a. The form ofthe slot of the catch b.

Fig. 3 is a half section of the front end of a pole, and shows themanner of preparing the wood before the land B is attached. fis a boredesigned to admit the pin a. The enlargement at the end of the boreprovides a cavity, in which the catch b operates.

Fig. 4 is a miniature perspective view illustrating the manner ofcombining and co-oper- The dotted lines indicate the position in whichthe neck-yoke and coupling-pin are held when introduced to the pole. Byturning the yoke to the position re- It may be quired for use the pin isalso turned thereby, and the catch b brought to the top, where it willbear against the inside of the band B. This catch device for holding twoseparate parts together is in common use; but by the manner in which Iuse it, in combination with the bore in the pole and the long pin a, theilange c, the ear d, and yoke C, a new and useful re! sult isaccomplished. The long pin a andthe flange c form bearings to keep theneck-yoke in a proper position when in use, and at the same time admitof a swivel-joint movement in the coupling. To disconnect the yoke fromthe pole invert its position, as indicated by the dotted lines, andwithdraw the pin.

My coupling is specially designed for culti# vators, but is equally welladapted for all kinds of carriages where a neck-yoke is required.

I am aware that a socket, a shank or pin,

vand a neck-yoke have been combined with a Claim.

I claim as my invention- The coupling-pin, composed of the parts u. b cd, as illustrated in Fig. 1, when combined and operated with a neck-yokeand pole, in the manner described.

-WILLIAM W. SKINNER.

Witnesses J oHN GOLDING, OHAs. S. ScoFIELn.

